Premium 304 stainless steel, BPA free; Durable and Healthy, Hygienic, No metallic odor.
Thermos vacuum insulation technology for maximum temperature retention, keeps hot for 24 hours and cold for 24 hours.
Double wall vacuum insulation retains hot or cold temperatures.
Durable stainless steel interior and exterior.
Cool to the touch with hot liquids, sweat-proof with cold.
Size:6.5*20cm/2.56*7.87inch(D*H); The cup is easy to be disassembled, and the caliber is wide enough for the cup brush to go through.